====== ssh-proxy-command ======

While browsing through ''ssh_config(5)'', I stumbled over the option ''ProxyCommand'', which allows specifying an arbitary command for establishing the connection to the remote ''sshd''. While the manual gives the example of using [[ http://netcat.sourceforge.net/netcat | netcat ]] to connect through an http proxy, I was thinking about something else. At home, I'm using an [[ http://openwrt.org | openwrt router ]], which offers a [[ http://matt.ucc.asn.au/dropbear/dropbear.html | dropbear sshd ]], from where I can connect to my workstation at home. In order to faciliate this, I added this tho me ''~/.ssh/ssh_config'':

<code>
Host workstation-remote
	ProxyCommand ssh home nc workstation 22
	User rho
</code>

So this in fact, I'm still using netcat like suggested in the manual, but on the router on the remote host. Neat. Together with a ''ControlMaster'' socket, connections now go really fast:

<code>
Host *
 	ControlPath ~/.ssh/master-%r@%h:%p
	ControlMaster auto
</code>

~~DISCUSSION~~

{{tag>ubuntu debian english}}